RHQ plugin can't find class in included jar

Thomas Segismont tsegismo at redhat.com
Wed Nov 12 09:08:09 UTC 2014


The lib directory is the right place to put it.

If your JAR is readable (not corrupted) then maybe wiseman creates its 
own, not parent first class loader?

Le 12/11/2014 05:56, Ken Louie a écrit :
> Hi,
>
> I recently updated one of our RHQ plugins to include an implementation
> of ws-management. I added the following jars to the lib/ folder within
> the plugin jar:
>
> wiseman-core.jar
> wiseman-client.jar
>
> We have a ResourceComponent which uses an API, which in-turn uses
> ws-management to make configuration changes to one of our other servers.
> However, when we call this API in our ResourceComponent , and it tries
> to use ws-management, I'm getting the following error:
>
> java.lang.reflect.UndeclaredThrowableException
>      at com.sun.proxy.$Proxy70.updateResourceConfiguration(Unknown Source)
>      at
> org.rhq.core.pc.configuration.LegacyConfigManagement.executeUpdate(LegacyConfigManagement.java:87)
>      at
> org.rhq.core.pc.configuration.UpdateResourceConfigurationRunner.call(UpdateResourceConfigurationRunner.java:121)
>      at
> org.rhq.core.pc.configuration.UpdateResourceConfigurationRunner.run(UpdateResourceConfigurationRunner.java:109)
>      at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
>      at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>      at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
>      at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
>      at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
>      at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
>      at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.Exception: java.lang.NoClassDefFoundError: Could
> not initialize class com.sun.ws.management.transfer.Transfer
>      at
> org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:639)
>      at java.util.concurrent.FutureTask.run(FutureTask.java:262)
>      ... 3 more
> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
> com.sun.ws.management.transfer.Transfer
>      at
> com.sun.ws.management.client.impl.TransferableResourceImpl.setTransferProperties(TransferableResourceImpl.java:451)
>      at
> com.sun.ws.management.client.impl.TransferableResourceImpl.get(TransferableResourceImpl.java:531)
>      at
> com.sun.ws.management.client.impl.TransferableResourceImpl.get(TransferableResourceImpl.java:516)
>      at
> com.sun.ws.management.client.impl.TransferableResourceImpl.get(TransferableResourceImpl.java:504)
>
>
> I'm not sure why this is happening. The class:
> com.sun.ws.management.transfer.Transfer exists in wiseman-core.jar,
> which is included in the lib/ directory within the plug-in jar. I'm
> pretty sure this is the right location to put the jars, since I have
> other jars in this lib/ folder, and the plug-in seems to use them just
> fine (i.e. it seems to be able to use wiseman-client.jar) .
>
> Does anyone know why this issue would be happening, and how I could
> resolve it? Appreciate the help
>
> Thanks
>
>
>
>
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>



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